A Pentagon task force will investigate the religious climate at the Air Force Academy after allegations of anti-Semitism, favoritism for born-again Christian cadets and conversion attempts by evangelicals on the Colorado Springs campus.

The investigation, announced Tuesday by acting Air Force Secretary Michael Dominguez, will address the behavior of cadets and the academy's leadership. It comes four days after the group Americans United for Separation of Church and State issued a 14-page report citing instances of alleged religious bias and preferential treatment toward Christians at the academy.

A Pentagon statement Tuesday listed various steps already taken by the academy to address concerns of bias, including a mandatory class in religious tolerance for all 4,000 cadets and 5,000 other academy personnel. But the statement also noted that "lingering allegations," including those of Americans...